Proposal to remove OSGi dependencies from the CCSDK project

Dependencies on the OSGi frameworks and libraries are removed
by integrating the CCSDK project with the lighty.io.
It's a toolkit that allows to use ODL services (in this case
core services and the Restconf) without the dependency
on the Karaf framework and the Blueprint DI.

The ccsdk-lighty-module artifact contains lighty.io module
that groups all other modules from other repositories and
starts/stops them at once.

The ccsdk-lighty-distribution artifact starts
the lighty.io core, Restconf and the CCSDK integrated with
the lighty.io and creates zip distribution with the CCSDK
lighty.io application and necessary libraries.

The distribution-lighty-ubuntu-docker artifact creates
the docker image with the zip distribution from
the ccsdk-lighty-application artifact and necessary
configuration files.

For more information see the README.md file
in the lighty/docs directory.

More info about the lighty.io - https://lighty.io

Change-Id: Id29935c8e2951b400ad3217ff412bc5155384487
Signed-off-by: Matej Perina <matej.perina@pantheon.tech>
Signed-off-by: Samuel Kontris <samuel.kontris@pantheon.tech>

3 files changed, 292 insertions, 0 deletions

diff --git a/lighty/ccsdk-lighty-distribution/pom.xml b/lighty/ccsdk-lighty-distribution/pom.xml
new file mode 100755
index 00000000..4082589c
--- /dev/null
+++ b/lighty/ccsdk-lighty-distribution/pom.xml
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>io.lighty.core</groupId>
+		<artifactId>lighty-app-parent</artifactId>
+		<version>10.1.0</version>
+	</parent>
+
+	<groupId>org.onap.ccsdk.distribution</groupId>
+	<artifactId>ccsdk-lighty-distribution</artifactId>
+	<version>0.6.0-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<properties>
+		<maven.compiler.source>1.8</maven.compiler.source>
+		<maven.compiler.target>1.8</maven.compiler.target>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+
+		<application.main.class>org.onap.ccsdk.distribution.lighty.Main</application.main.class>
+		<application.attach.zip>true</application.attach.zip>
+
+		<maven.deploy.skip>true</maven.deploy.skip>
+	</properties>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.onap.ccsdk.sli.core</groupId>
+				<artifactId>ccsdk-lighty-dependency-versions</artifactId>
+				<version>${project.version}</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<dependencies>
+		<dependency>
+			<groupId>io.lighty.core</groupId>
+			<artifactId>lighty-controller</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>io.lighty.modules</groupId>
+			<artifactId>lighty-restconf-nb-community</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>io.lighty.resources</groupId>
+			<artifactId>singlenode-configuration</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.distribution</groupId>
+			<artifactId>ccsdk-lighty-module</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.sli.core</groupId>
+			<artifactId>sliapi-model</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.sli.northbound</groupId>
+			<artifactId>dataChange-model</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.sli.northbound</groupId>
+			<artifactId>asdcApi-model</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.onap.ccsdk.sli.northbound</groupId>
+			<artifactId>lcm-model</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+
+	</dependencies>
+</project>
diff --git a/lighty/ccsdk-lighty-distribution/src/main/java/org/onap/ccsdk/distribution/lighty/Main.java b/lighty/ccsdk-lighty-distribution/src/main/java/org/onap/ccsdk/distribution/lighty/Main.java
new file mode 100644
index 00000000..47163ea3
--- /dev/null
+++ b/lighty/ccsdk-lighty-distribution/src/main/java/org/onap/ccsdk/distribution/lighty/Main.java
@@ -0,0 +1,139 @@
+/*
+ * ============LICENSE_START==========================================
+ * Copyright (c) 2019 PANTHEON.tech s.r.o.
+ * ===================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END============================================
+ *
+ */
+package org.onap.ccsdk.distribution.lighty;
+
+import io.lighty.core.controller.impl.config.ControllerConfiguration;
+import io.lighty.core.controller.impl.util.ControllerConfigUtils;
+import io.lighty.modules.northbound.restconf.community.impl.config.RestConfConfiguration;
+import io.lighty.modules.northbound.restconf.community.impl.util.RestConfConfigUtils;
+import java.net.InetAddress;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Main class of the CCSDK lighty.io application. In order to start the application run main method. Path to
+ * the configuration file can be provided as argument. If not, then default configuration will be used.
+ */
+public class Main {
+
+    private static final Logger LOG = LoggerFactory.getLogger(Main.class);
+
+    private ShutdownHook shutdownHook;
+
+    public static void main(String[] args) {
+        Main app = new Main();
+        app.start(args, true);
+    }
+
+    public void start(String[] args, boolean registerShutdownHook) {
+        long startTime = System.nanoTime();
+        LOG.info(".__  .__       .__     __              .__                   _________ _________   _________________ "
+                + "  ____  __.");
+        LOG.info("|  | |__| ____ |  |___/  |_ ___.__.    |__| ____             \\_   ___ \\\\_   ___ \\ /   _____/\\___"
+                + "___ \\ |    |/ _|");
+        LOG.info("|  | |  |/ ___\\|  |  \\   __<   |  |    |  |/  _ \\    ______  /    \\  \\//    \\  \\/ \\_____  \\ "
+                + " |    |  \\|      <");
+        LOG.info("|  |_|  / /_/  >   Y  \\  |  \\___  |    |  (  <_> )  /_____/  \\     \\___\\     \\____/        \\ |"
+                + "    `   \\    |  \\");
+        LOG.info("|____/__\\___  /|___|  /__|  / ____| /\\ |__|\\____/             \\______  /\\______  /_______  //___"
+                + "____  /____|__ \\");
+        LOG.info("       /_____/      \\/      \\/      \\/                               \\/        \\/        \\/    "
+                + "     \\/        \\/");
+
+        LOG.info("Starting lighty.io CCSDK application ...");
+        LOG.info("https://lighty.io/");
+        LOG.info("https://github.com/PantheonTechnologies/lighty-core");
+        try {
+            if (args.length > 0) {
+                Path configPath = Paths.get(args[0]);
+                LOG.info("Using configuration from file {} ...", configPath);
+                //1. get controller configuration
+                ControllerConfiguration singleNodeConfiguration =
+                        ControllerConfigUtils.getConfiguration(Files.newInputStream(configPath));
+                //2. get RESTCONF NBP configuration
+                RestConfConfiguration restConfConfiguration = RestConfConfigUtils
+                        .getRestConfConfiguration(Files.newInputStream(configPath));
+                //3. start lighty
+                startLighty(singleNodeConfiguration, restConfConfiguration, registerShutdownHook);
+            } else {
+                LOG.info("Using default configuration ...");
+                Set<YangModuleInfo> modelPaths = Stream.concat(RestConfConfigUtils.YANG_MODELS.stream(),
+                        CcsdkLightyModule.YANG_MODELS.stream()).collect(Collectors.toSet());
+                //1. get controller configuration
+                ControllerConfiguration defaultSingleNodeConfiguration =
+                        ControllerConfigUtils.getDefaultSingleNodeConfiguration(modelPaths);
+                //2. get RESTCONF NBP configuration
+                RestConfConfiguration restConfConfig =
+                        RestConfConfigUtils.getDefaultRestConfConfiguration();
+                restConfConfig.setInetAddress(InetAddress.getLocalHost());
+                restConfConfig.setHttpPort(8181);
+                //3. start lighty
+                startLighty(defaultSingleNodeConfiguration, restConfConfig, registerShutdownHook);
+            }
+            float duration = (System.nanoTime() - startTime)/1_000_000f;
+            LOG.info("lighty.io and CCSDK started in {}ms", duration);
+        } catch (Exception e) {
+            LOG.error("Main CCSDK lighty.io application exception: ", e);
+        }
+    }
+
+    private void startLighty(ControllerConfiguration singleNodeConfiguration,
+            RestConfConfiguration restConfConfiguration, boolean registerShutdownHook)
+            throws ExecutionException, InterruptedException {
+        CcsdkLightyApplication ccsdkLightyApplication = new CcsdkLightyApplication(singleNodeConfiguration,
+                restConfConfiguration);
+
+        if (registerShutdownHook) {
+            shutdownHook = new ShutdownHook(ccsdkLightyApplication);
+            Runtime.getRuntime().addShutdownHook(shutdownHook);
+        }
+
+        ccsdkLightyApplication.start().get();
+    }
+
+    private static class ShutdownHook extends Thread {
+
+        private static final Logger LOG = LoggerFactory.getLogger(ShutdownHook.class);
+        private final CcsdkLightyApplication ccsdkLightyApplication;
+
+        ShutdownHook(CcsdkLightyApplication ccsdkLightyApplication) {
+            this.ccsdkLightyApplication = ccsdkLightyApplication;
+        }
+
+        @Override
+        public void run() {
+            LOG.info("lighty.io and CCSDK shutting down ...");
+            long startTime = System.nanoTime();
+            try {
+                ccsdkLightyApplication.shutdown();
+            } catch (Exception e) {
+                LOG.error("Exception while shutting down lighty.io CCSDK application:", e);
+            }
+            float duration = (System.nanoTime() - startTime)/1_000_000f;
+            LOG.info("lighty.io and CCSDK stopped in {}ms", duration);
+        }
+
+    }
+}
diff --git a/lighty/ccsdk-lighty-distribution/src/main/resources/lightyCcsdkConfig.json b/lighty/ccsdk-lighty-distribution/src/main/resources/lightyCcsdkConfig.json
new file mode 100644
index 00000000..1abed344
--- /dev/null
+++ b/lighty/ccsdk-lighty-distribution/src/main/resources/lightyCcsdkConfig.json
@@ -0,0 +1,74 @@
+{
+    "controller":{
+        "restoreDirectoryPath":"./clustered-datastore-restore",
+        "maxDataBrokerFutureCallbackQueueSize":1000,
+        "maxDataBrokerFutureCallbackPoolSize":10,
+        "metricCaptureEnabled":false,
+        "mailboxCapacity":1000,
+        "moduleShardsConfig": "configuration/initial/module-shards.conf",
+        "modulesConfig": "configuration/initial/modules.conf",
+        "domNotificationRouterConfig":{
+            "queueDepth":65536,
+            "spinTime":0,
+            "parkTime":0,
+            "unit":"MILLISECONDS"
+        },
+        "actorSystemConfig":{
+            "akkaConfigPath":"singlenode/akka-default.conf",
+            "factoryAkkaConfigPath":"singlenode/factory-akka-default.conf"
+        },
+        "schemaServiceConfig":{
+            "topLevelModels":[
+                { "nameSpace": "urn:TBD:params:xml:ns:yang:network:isis-topology", "name": "isis-topology", "revision": "2013-07-12" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:md:sal:core:general-entity", "name": "general-entity", "revision": "2015-08-20" },
+                { "nameSpace": "subscribe:to:notification", "name": "subscribe-to-notification", "revision": "2016-10-28" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:md:sal:cluster:admin", "name": "cluster-admin", "revision": "2015-10-13" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-lisp-address-types", "name": "ietf-lisp-address-types", "revision": "2015-11-05" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:aaa", "name": "aaa", "revision": "2016-12-14" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:config:actor-system-provider:impl", "name": "actor-system-provider-impl", "revision": "2015-10-05" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ospf-topology", "name": "ospf-topology", "revision": "2013-07-12" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:config:distributed-datastore-provider", "name": "distributed-datastore-provider", "revision": "2014-06-12" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-yang-library", "name": "ietf-yang-library", "revision": "2016-06-21" },
+                { "nameSpace": "urn:TBD:params:xml:ns:yang:network:isis-topology", "name": "isis-topology", "revision": "2013-10-21" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:inmemory-datastore-provider", "name": "opendaylight-inmemory-datastore-provider", "revision": "2014-06-17" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-restconf", "name": "ietf-restconf", "revision": "2013-10-19" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:iana-afn-safi", "name": "iana-afn-safi", "revision": "2013-07-04" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:config:concurrent-data-broker", "name": "odl-concurrent-data-broker-cfg", "revision": "2014-11-24" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:md:sal:clustering:entity-owners", "name": "entity-owners", "revision": "2015-08-04" },
+                { "nameSpace": "urn:sal:restconf:event:subscription", "name": "sal-remote-augment", "revision": "2014-07-08" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-access-control-list", "name": "ietf-access-control-list", "revision": "2016-02-18" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom:pingpong", "name": "opendaylight-pingpong-broker", "revision": "2014-11-07" },
+                { "nameSpace": "instance:identifier:patch:module", "name": "instance-identifier-patch-module", "revision": "2015-11-21" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-network-topology", "name": "ietf-network-topology", "revision": "2015-06-08" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-yang-types", "name": "ietf-yang-types", "revision": "2010-09-24" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:mdsal:core:general-entity", "name": "odl-general-entity", "revision": "2015-09-30" },
+                { "nameSpace": "urn:opendaylight:yang:extension:yang-ext", "name": "yang-ext", "revision": "2013-07-09" },
+                { "nameSpace": "urn:opendaylight:l2:types", "name": "opendaylight-l2-types", "revision": "2013-08-27" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:md:sal:config:impl:cluster-singleton-service", "name": "cluster-singleton-service-impl", "revision": "2016-07-18" },
+                { "nameSpace": "urn:TBD:params:xml:ns:yang:ospf-topology", "name": "ospf-topology", "revision": "2013-10-21" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-restconf-monitoring", "name": "ietf-restconf-monitoring", "revision": "2017-01-26" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:md:sal:clustering:prefix-shard-configuration", "name": "prefix-shard-configuration", "revision": "2017-01-10" },
+                { "nameSpace": "urn:opendaylight:aaa:app:config", "name": "aaa-app-config", "revision": "2017-06-19" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:ietf-restconf", "name": "ietf-restconf", "revision": "2017-01-26" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:config:legacy-entity-ownership-service-provider", "name": "opendaylight-legacy-entity-ownership-service-provider", "revision": "2016-02-26" },
+                { "nameSpace": "urn:ietf:params:xml:ns:yang:iana-if-type", "name": "iana-if-type", "revision": "2014-05-08" },
+                { "nameSpace": "urn:opendaylight:params:xml:ns:yang:controller:md:sal:binding:impl", "name": "opendaylight-sal-binding-broker-impl", "revision": "2013-10-28" },
+
+                { "nameSpace": "org:onap:ccsdk:sli:core:sliapi", "name": "SLI-API", "revision": "2016-11-10" },
+                { "nameSpace": "org:onap:ccsdk:sli:northbound:lcm", "name": "LCM", "revision": "2018-03-29" },
+                { "nameSpace": "org:onap:ccsdk:sli:northbound:datachange", "name": "DataChange", "revision": "2015-05-19" },
+                { "nameSpace": "org:onap:ccsdk:sli:northbound:asdcapi:common", "name": "asdc-api-common", "revision": "2017-02-01" },
+                { "nameSpace": "http://xmlns.onap.org/asdc/license-model/1.0", "name": "asdc-license-model", "revision": "2016-04-27" },
+                { "nameSpace": "org:onap:ccsdk", "name": "ASDC-API", "revision": "2017-02-01" }
+
+            ]
+        }
+    },
+    "restconf":{
+        "httpPort":8181,
+        "webSocketPort": 8185,
+        "restconfServletContextPath":"/restconf",
+        "jsonRestconfServiceType": "DRAFT_18",
+        "inetAddress": "0.0.0.0"
+    }
+}